= MSC16VE - Ethernet Readout RAW Data Format V2 =

 * Hardware: [[MSC16VE]]
 * [[DataFormatMSC_ETH|MSC Ethernet Raw Data Format V1]]

 * MSC16VE payload data is encapsulated in [[MStream_2_2|M-Stream 2.2]] protocol using Data Subtype 2.
 * Unlike [[DataFormatMSC_ETH|MSC Ethernet Raw Data Format V1]], in data format version 2 only data from one channel transmits per one packet

||<:-4>'''MSC16VE Ethernet Readout Data Format'''||
||<:>''word'' #||<:>''byte offset''||<:>''bits''||<:>''description''||
||0-1      ||            0 || 31:0 || M-Stream header, 2 words ||
||2-3      ||            0 || 31:0 || M-Stream subtype 2 header, 2 words ||
||<-4>'''M-Stream User Payload, subtype 2''' ||
||<:>   4  ||<:>        16 || 31:0  || Timestamp of slice #0 in packet, TAI seconds     ||
||<:|2> 5  ||<:|2>      20 || 31:2  || Timestamp of slice #0 in packet, TAI nanoseconds ||
||                             1:0  || Timestamp of slice #0 in packet, TAI flags       ||
||<:|5> 6  ||<:|5>      24 || 31:28 || MSC Data Version (*)||
||                            27:16 || reserved            ||
||                            15:12 || External count conditions number ||
||                            11:4  || Channel number      ||
||                             3:0  || Counter bits number ||
||<:>   7  ||<:>        28 || 31:0  || Slice interval, nanoseconds ||
||<:>   8  ||<:>        32 || 31:0  || Missing hits during suspend (**) before current packet ||
||<:>   9  ||<:>        36 || 31:0  ||<(|3 style="vertical-align: middle;"> MSC time slice data words ||
||<:-3>                      ...    ||
||<:>   N  ||<:>   4*(N-1) || 31:0  ||

 . (*) - in raw data this number is one less than data version
 . (**) - suspend occurs if channel buffer for stream data if full (not enough space for new mstream packet)

=== MSC time slice data word format ===

||<:-4#DDDDDD>'''Time slice data word'''  ||
||<:#EEEEEE>'''Bits'''        ||<:>31 .. (N,,ce,,+N,,b,,) ||<:>N,,ce,,-1 .. N,,b,,            ||<:>N,,b,,-1 .. 0   ||
||<:#EEEEEE>'''Description''' ||<:>Time slice number      ||<:>External count<<BR>>conditions ||<:>Channel counter ||

 . N,,ce,, - number of external count conditions inputs
 . N,,b,, - number of counter bits

''Time slice data'' can be suppressed if both next conditions are met:
 * channel counter is zero for current time slice
 * external count conditions did not changes since beginning of previous time slice

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[[CategoryRawData|RawData]] [[CategoryMSC|MSC]]